FAQ

  1. I changed to use a bigger font size, but some apps still show text in small font.

    Some apps hardwire the font size in the code so the font size won't be changed after Big Font changed the system font scaling factor. Please help to send an email to app developer about this issue.

  2. Why does Big Font require the root permission?

    Big Font only requires the root permission for Android 4.2 ~ 6.x devices for changing the system font size without you to manually restart the device.

    The root permission is also required if you'd like to add more display zoom ratios on Android 7.0 or greater devices.

    To enable this, please first check the "Root access" option by going to the Settings window.

  3. Why can't I find the "Zoom display" function?

    Due to the restriction of Android, this feature is only available on Android 7.0 or greater devices.

    In addition, this function can only be used when the Accessibility services permission is granted or on a rooted device.

  4. Why all "Ignored apps" options are disabled?

    Due to the restriction of Android, this feature is only available for Android 2 or 3 devices.

  5. The system font size won't be changed after the device rebooted.

    Some devices built-in an auto-start management function which prevents your apps from auto startup after you reboot the device.

    For how to add our apps to the allowed list, please visit http://bit.ly/2CsiBzk

  6. I got an error message while applying some text size on my device

    The new Android system patch disallows users to change the system font with a tiny or huge size. It's a system limitation unless you are using a custom ROM.

    If you are using an Android 7 or greater device, please use the "Zoom display" function instead.
    Big Font > top-left navigation menu > Zoom display

  7. How to use adb to grant permissions to this app?

    Some functions are only available on a rooted device and fortunately, you can enable them on a non-root device by using ADB to grant the WRITE_SECURE_SETTINGS permission to this app.

    If you have installed the adb (Android Debug Bridge) command-line utility on your desktop, you can use the following commend to grant the WRITE_SECURE_SETTINGS permission to this app:
    adb shell pm grant com.a0soft.gphone.bfont android.permission.WRITE_SECURE_SETTINGS
    For more details or how to install adb, please visit bit.ly/2Pqyz5W.